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How many moles of gas are required to completely reduce one mole of nitrobenzene to aniline using caAmines Chemistry Question

Question

How many moles of $H_2$ gas are required to completely reduce one mole of nitrobenzene to aniline using catalytic hydrogenation?

Answer: 3

💡 Solution & Explanation

The balanced chemical equation for the direct reduction of nitrobenzene to aniline is $PhNO_2 + 3H_2 \xrightarrow{Pd/Pt/Ni} PhNH_2 + 2H_2O$. Thus, exactly 3 moles of hydrogen gas are consumed per mole of nitrobenzene to reduce the nitro group and remove oxygen as water.

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